<!DOCTYPE html>
<html>

    <head>
        <meta charset='utf-8' />
        <link href='../fullcalendar.css' rel='stylesheet' />
        <link href='../fullcalendar.print.css' rel='stylesheet' media='print' />
        <script src='../lib/moment.min.js'></script>
        <script src='../lib/jquery.min.js'></script>
        <script src='../fullcalendar.min.js'></script>
        <script>
            $(document).ready(function()
            {
                var currentTimezone = false;
                // load the list of available timezones
                $.getJSON('php/get-timezones.php', function(timezones)
                {
                    $.each(timezones, function(i, timezone)
                    {
                        if (timezone != 'UTC')
                        { // UTC is already in the list
                            $('#timezone-selector').append($("<option/>").text(timezone).attr('value', timezone));
                        }
                    });
                });
                // when the timezone selector changes, rerender the calendar
                $('#timezone-selector').on('change', function()
                {
                    currentTimezone = this.value || false;
                    $('#calendar').fullCalendar('destroy');
                    renderCalendar();
                });

                function renderCalendar()
                {
                    $('#calendar').fullCalendar(
                    {
                        header:
                        {
                            left: 'prev,next today',
                            center: 'title',
                            right: 'month,agendaWeek,agendaDay'
                        },
                        defaultDate: '2015-02-12',
                        timezone: currentTimezone,
                        editable: true,
                        eventLimit: true, // allow "more" link when too many events
                        events:
                        {
                            url: 'php/get-events.php',
                            error: function()
                            {
                                $('#script-warning').show();
                            }
                        },
                        loading: function(bool)
                        {
                            $('#loading').toggle(bool);
                        },
                        eventRender: function(event, el)
                        {
                            // render the timezone offset below the event title
                            if (event.start.hasZone())
                            {
                                el.find('.fc-title').after($('<div class="tzo"/>').text(event.start.format('Z')));
                            }
                        }
                    });
                }
                renderCalendar();
            });
        </script>
        <style>
            body {
                margin: 0;
                padding: 0;
                font-family: "Lucida Grande", Helvetica, Arial, Verdana, sans-serif;
                font-size: 14px;
            }
            
            #top {
                background: #eee;
                border-bottom: 1px solid #ddd;
                padding: 0 10px;
                line-height: 40px;
                font-size: 12px;
            }
            
            .left {
                float: left
            }
            
            .right {
                float: right
            }
            
            .clear {
                clear: both
            }
            
            #script-warning,
            #loading {
                display: none
            }
            
            #script-warning {
                font-weight: bold;
                color: red
            }
            
            #calendar {
                max-width: 900px;
                margin: 40px auto;
                padding: 0 10px;
            }
            
            .tzo {
                color: #000;
            }
        </style>
    </head>

    <body>
        <div id='top'>
            <div class='left'> Timezone:
                <select id='timezone-selector'>
                    <option value='' selected>none</option>
                    <option value='local'>local</option>
                    <option value='UTC'>UTC</option>
                </select>
            </div>
            <div class='right'>
                <span id='loading'>loading...</span>
                <span id='script-warning'><code>php/get-events.php</code> must be running.</span>
            </div>
            <div class='clear'></div>
        </div>
        <div id='calendar'></div>
    </body>

</html>